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package servlet;

import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;

/**
 *
 * @author Marco
 */


public class ServletUpload extends HttpServlet {
       
    private final String UPLOAD_DIRECTORY = "/mfm-centro-sportivo-war/web/Locandine/";
    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        Path webAppPath = Paths.get(getServletContext().getRealPath("/"));        
        Path root = webAppPath.getRoot();          
        String subPath = root.toString().concat((webAppPath.subpath(0, webAppPath.getNameCount()-4)).toString());
        
                //HttpSession session = request.getSession();
                if(ServletFileUpload.isMultipartContent(request)){
                    System.out.println("ENTRO NELL'IF DELL'UPLOAD");
                    try {
                        List<FileItem> multiparts = new ServletFileUpload(new DiskFileItemFactory()).parseRequest(request);
                        for(FileItem item : multiparts){
                            if(!item.isFormField()){
                                String name = new File(item.getName()).getName();
                                item.write(new File(subPath + UPLOAD_DIRECTORY + name));
                                request.setAttribute("urlUpload", "Locandine/" + name);
                            }
                        }
                        //File uploaded successfully
                        request.setAttribute("messageUpload", "avvenuto");
                     } catch (Exception ex) {
                        request.setAttribute("messageUpload", "errore");
                     }          
                }else{
                    request.setAttribute("messageUpload", "errore");
                }
                request.getRequestDispatcher("/gest_evento.jsp?op=inserisciEvento").forward(request, response);
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}